sys/bus/usb/ehci_pci.c

   1 /*
   2  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   3  * All rights reserved.
   4  *
   5  * This code is derived from software contributed to The NetBSD Foundation
   6  * by Lennart Augustsson (augustss@carlstedt.se) at
   7  * Carlstedt Research & Technology.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *        This product includes software developed by the NetBSD
  20  *        Foundation, Inc. and its contributors.
  21  * 4. Neither the name of The NetBSD Foundation nor the names of its
  22  *    contributors may be used to endorse or promote products derived
  23  *    from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  35  * POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  * $FreeBSD: src/sys/dev/usb/ehci_pci.c,v 1.18.2.1 2006/01/26 01:43:13 iedowse Exp $
  38  */
  39
  40 /*
  41  * USB Enhanced Host Controller Driver, a.k.a. USB 2.0 controller.
  42  *
  43  * The EHCI 1.0 spec can be found at
  44  * http://developer.intel.com/technology/usb/download/ehci-r10.pdf
  45  * and the USB 2.0 spec at
  46  * http://www.usb.org/developers/docs/usb_20.zip
  47  */
  48
  49 /* The low level controller code for EHCI has been split into
  50  * PCI probes and EHCI specific code. This was done to facilitate the
  51  * sharing of code between *BSD's
  52  */
  53
  54 #include <sys/param.h>
  55 #include <sys/systm.h>
  56 #include <sys/kernel.h>
  57 #include <sys/module.h>
  58 #include <sys/bus.h>
  59 #include <sys/queue.h>
  60 #include <sys/lock.h>
  61 #include <sys/rman.h>
  62
  63 #include <bus/pci/pcivar.h>
  64 #include <bus/pci/pcireg.h>
  65
  66 #include <bus/usb/usb.h>
  67 #include <bus/usb/usbdi.h>
  68 #include <bus/usb/usbdivar.h>
  69 #include <bus/usb/usb_mem.h>
  70
  71 #include <bus/usb/ehcireg.h>
  72 #include <bus/usb/ehcivar.h>
  73
  74 #define PCI_EHCI_VENDORID_ACERLABS      0x10b9
  75 #define PCI_EHCI_VENDORID_AMD           0x1022
  76 #define PCI_EHCI_VENDORID_APPLE         0x106b
  77 #define PCI_EHCI_VENDORID_ATI           0x1002
  78 #define PCI_EHCI_VENDORID_CMDTECH       0x1095
  79 #define PCI_EHCI_VENDORID_INTEL         0x8086
  80 #define PCI_EHCI_VENDORID_NEC           0x1033
  81 #define PCI_EHCI_VENDORID_OPTI          0x1045
  82 #define PCI_EHCI_VENDORID_PHILIPS       0x1131
  83 #define PCI_EHCI_VENDORID_SIS           0x1039
  84 #define PCI_EHCI_VENDORID_NVIDIA        0x12D2
  85 #define PCI_EHCI_VENDORID_NVIDIA2       0x10DE
  86 #define PCI_EHCI_VENDORID_VIA           0x1106
  87
  88 /* AcerLabs/ALi */
  89 #define PCI_EHCI_DEVICEID_M5239         0x523910b9
  90 static const char *ehci_device_m5239 = "ALi M5239 USB 2.0 controller";
  91
  92 /* AMD */
  93 #define PCI_EHCI_DEVICEID_8111          0x74631022
  94 #define PCI_EHCI_DEVICEID_CS5536        0x20951022
  95 static const char *ehci_device_8111 = "AMD 8111 USB 2.0 controller";
  96 static const char *ehci_device_CS5536 = "AMD CS5536 USB 2.0 controller";
  97
  98 /* ATI */
  99 #define PCI_EHCI_DEVICEID_SB200         0x43451002
 100 static const char *ehci_device_sb200 = "ATI SB200 USB 2.0 controller";
 101 #define PCI_EHCI_DEVICEID_SB400         0x43731002
 102 static const char *ehci_device_sb400 = "ATI SB400 USB 2.0 controller";
 103
 104 /* Intel */
 105 #define PCI_EHCI_DEVICEID_6300          0x25ad8086
 106 static const char *ehci_device_6300 = "Intel 6300ESB USB 2.0 controller";
 107 #define PCI_EHCI_DEVICEID_ICH4          0x24cd8086
 108 static const char *ehci_device_ich4 = "Intel 82801DB/L/M USB 2.0 controller";
 109 #define PCI_EHCI_DEVICEID_ICH5          0x24dd8086
 110 static const char *ehci_device_ich5 = "Intel 82801EB/R USB 2.0 controller";
 111 #define PCI_EHCI_DEVICEID_ICH6          0x265c8086
 112 static const char *ehci_device_ich6 = "Intel 82801FB USB 2.0 controller";
 113 #define PCI_EHCI_DEVICEID_ICH7          0x27cc8086
 114 static const char *ehci_device_ich7 = "Intel 82801GB/R USB 2.0 controller";
 115
 116 /* NEC */
 117 #define PCI_EHCI_DEVICEID_NEC           0x00e01033
 118 static const char *ehci_device_nec = "NEC uPD 720100 USB 2.0 controller";
 119
 120 /* NVIDIA */
 121 #define PCI_EHCI_DEVICEID_NF2           0x006810de
 122 static const char *ehci_device_nf2 = "NVIDIA nForce2 USB 2.0 controller";
 123 #define PCI_EHCI_DEVICEID_NF2_400       0x008810de
 124 static const char *ehci_device_nf2_400 = "NVIDIA nForce2 Ultra 400 USB 2.0 controller";
 125 #define PCI_EHCI_DEVICEID_NF3           0x00d810de
 126 static const char *ehci_device_nf3 = "NVIDIA nForce3 USB 2.0 controller";
 127 #define PCI_EHCI_DEVICEID_NF3_250       0x00e810de
 128 static const char *ehci_device_nf3_250 = "NVIDIA nForce3 250 USB 2.0 controller";
 129 #define PCI_EHCI_DEVICEID_NF4           0x005b10de
 130 static const char *ehci_device_nf4 = "NVIDIA nForce4 USB 2.0 controller";
 131
 132 /* Philips */
 133 #define PCI_EHCI_DEVICEID_ISP156X       0x15621131
 134 static const char *ehci_device_isp156x = "Philips ISP156x USB 2.0 controller";
 135
 136 /* VIA */
 137 #define PCI_EHCI_DEVICEID_VIA           0x31041106
 138 static const char *ehci_device_via = "VIA VT6202 USB 2.0 controller";
 139
 140 /* Generic */
 141 static const char *ehci_device_generic = "EHCI (generic) USB 2.0 controller";
 142
 143 #define PCI_EHCI_BASE_REG       0x10
 144
 145 #ifdef USB_DEBUG
 146 #define EHCI_DEBUG USB_DEBUG
 147 #define DPRINTF(x)      do { if (ehcidebug) kprintf x; } while (0)
 148 extern int ehcidebug;
 149 #else
 150 #define DPRINTF(x)
 151 #endif
 152
 153 static int ehci_pci_attach(device_t self);
 154 static int ehci_pci_detach(device_t self);
 155 static int ehci_pci_shutdown(device_t self);
 156 static int ehci_pci_suspend(device_t self);
 157 static int ehci_pci_resume(device_t self);
 158 static void ehci_pci_givecontroller(device_t self);
 159 static void ehci_pci_takecontroller(device_t self);
 160
 161 static int
 162 ehci_pci_suspend(device_t self)
 163 {
 164         ehci_softc_t *sc = device_get_softc(self);
 165         int err;
 166
 167         err = bus_generic_suspend(self);
 168         if (err)
 169                 return (err);
 170         ehci_power(PWR_SUSPEND, sc);
 171
 172         return 0;
 173 }
 174
 175 static int
 176 ehci_pci_resume(device_t self)
 177 {
 178         ehci_softc_t *sc = device_get_softc(self);
 179
 180         ehci_pci_takecontroller(self);
 181         ehci_power(PWR_RESUME, sc);
 182         bus_generic_resume(self);
 183
 184         return 0;
 185 }
 186
 187 static int
 188 ehci_pci_shutdown(device_t self)
 189 {
 190         ehci_softc_t *sc = device_get_softc(self);
 191         int err;
 192
 193         err = bus_generic_shutdown(self);
 194         if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
 195                 ehci_shutdown(sc);
 196                 ehci_pci_givecontroller(self);
 197         }
 198
 199         return err;
 200 }
 201
 202 static const char *
 203 ehci_pci_match(device_t self)
 204 {
 205         u_int32_t device_id = pci_get_devid(self);
 206
 207         switch (device_id) {
 208         case PCI_EHCI_DEVICEID_M5239:
 209                 return (ehci_device_m5239);
 210         case PCI_EHCI_DEVICEID_8111:
 211                 return (ehci_device_8111);
 212         case PCI_EHCI_DEVICEID_CS5536:
 213                 return (ehci_device_CS5536);
 214         case PCI_EHCI_DEVICEID_SB200:
 215                 return (ehci_device_sb200);
 216         case PCI_EHCI_DEVICEID_SB400:
 217                 return (ehci_device_sb400);
 218         case PCI_EHCI_DEVICEID_6300:
 219                 return (ehci_device_6300);
 220         case PCI_EHCI_DEVICEID_ICH4:
 221                 return (ehci_device_ich4);
 222         case PCI_EHCI_DEVICEID_ICH5:
 223                 return (ehci_device_ich5);
 224         case PCI_EHCI_DEVICEID_ICH6:
 225                 return (ehci_device_ich6);
 226         case PCI_EHCI_DEVICEID_ICH7:
 227                 return (ehci_device_ich7);
 228         case PCI_EHCI_DEVICEID_NEC:
 229                 return (ehci_device_nec);
 230         case PCI_EHCI_DEVICEID_NF2:
 231                 return (ehci_device_nf2);
 232         case PCI_EHCI_DEVICEID_NF2_400:
 233                 return (ehci_device_nf2_400);
 234         case PCI_EHCI_DEVICEID_NF3:
 235                 return (ehci_device_nf3);
 236         case PCI_EHCI_DEVICEID_NF3_250:
 237                 return (ehci_device_nf3_250);
 238         case PCI_EHCI_DEVICEID_NF4:
 239                 return (ehci_device_nf4);
 240         case PCI_EHCI_DEVICEID_ISP156X:
 241                 return (ehci_device_isp156x);
 242         case PCI_EHCI_DEVICEID_VIA:
 243                 return (ehci_device_via);
 244         default:
 245                 if (pci_get_class(self) == PCIC_SERIALBUS
 246                     && pci_get_subclass(self) == PCIS_SERIALBUS_USB
 247                     && pci_get_progif(self) == PCI_INTERFACE_EHCI) {
 248                         return (ehci_device_generic);
 249                 }
 250         }
 251
 252         return NULL;            /* dunno */
 253 }
 254
 255 static int
 256 ehci_pci_probe(device_t self)
 257 {
 258         const char *desc = ehci_pci_match(self);
 259
 260         if (desc) {
 261                 device_set_desc(self, desc);
 262                 device_set_async_attach(self, TRUE);
 263                 return 0;
 264         } else {
 265                 return ENXIO;
 266         }
 267 }
 268
 269 static int
 270 ehci_pci_attach(device_t self)
 271 {
 272         ehci_softc_t *sc = device_get_softc(self);
 273         device_t parent;
 274         device_t *neighbors;
 275         device_t *nbus;
 276         struct usb_softc *usb_sc;
 277         struct usbd_bus *bsc;
 278         int err;
 279         int rid;
 280         int ncomp;
 281         int count, buscount;
 282         int slot, function;
 283         int res;
 284         int i;
 285
 286         switch(pci_read_config(self, PCI_USBREV, 1) & PCI_USBREV_MASK) {
 287         case PCI_USBREV_PRE_1_0:
 288         case PCI_USBREV_1_0:
 289         case PCI_USBREV_1_1:
 290                 sc->sc_bus.usbrev = USBREV_UNKNOWN;
 291                 kprintf("pre-2.0 USB rev\n");
 292                 return ENXIO;
 293         case PCI_USBREV_2_0:
 294                 sc->sc_bus.usbrev = USBREV_2_0;
 295                 break;
 296         default:
 297                 sc->sc_bus.usbrev = USBREV_UNKNOWN;
 298                 break;
 299         }
 300
 301         pci_enable_busmaster(self);
 302
 303         rid = PCI_CBMEM;
 304         sc->io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
 305             RF_ACTIVE);
 306         if (!sc->io_res) {
 307                 device_printf(self, "Could not map memory\n");
 308                 return ENXIO;
 309         }
 310         sc->iot = rman_get_bustag(sc->io_res);
 311         sc->ioh = rman_get_bushandle(sc->io_res);
 312
 313         rid = 0;
 314         sc->irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
 315             RF_SHAREABLE | RF_ACTIVE);
 316         if (sc->irq_res == NULL) {
 317                 device_printf(self, "Could not allocate irq\n");
 318                 ehci_pci_detach(self);
 319                 return ENXIO;
 320         }
 321         sc->sc_bus.bdev = device_add_child(self, "usb", -1);
 322         if (!sc->sc_bus.bdev) {
 323                 device_printf(self, "Could not add USB device\n");
 324                 ehci_pci_detach(self);
 325                 return ENOMEM;
 326         }
 327         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
 328
 329         /* ehci_pci_match will never return NULL if ehci_pci_probe succeeded */
 330         device_set_desc(sc->sc_bus.bdev, ehci_pci_match(self));
 331         switch (pci_get_vendor(self)) {
 332         case PCI_EHCI_VENDORID_ACERLABS:
 333                 ksprintf(sc->sc_vendor, "AcerLabs");
 334                 break;
 335         case PCI_EHCI_VENDORID_AMD:
 336                 ksprintf(sc->sc_vendor, "AMD");
 337                 break;
 338         case PCI_EHCI_VENDORID_APPLE:
 339                 ksprintf(sc->sc_vendor, "Apple");
 340                 break;
 341         case PCI_EHCI_VENDORID_ATI:
 342                 ksprintf(sc->sc_vendor, "ATI");
 343                 break;
 344         case PCI_EHCI_VENDORID_CMDTECH:
 345                 ksprintf(sc->sc_vendor, "CMDTECH");
 346                 break;
 347         case PCI_EHCI_VENDORID_INTEL:
 348                 ksprintf(sc->sc_vendor, "Intel");
 349                 break;
 350         case PCI_EHCI_VENDORID_NEC:
 351                 ksprintf(sc->sc_vendor, "NEC");
 352                 break;
 353         case PCI_EHCI_VENDORID_OPTI:
 354                 ksprintf(sc->sc_vendor, "OPTi");
 355                 break;
 356         case PCI_EHCI_VENDORID_SIS:
 357                 ksprintf(sc->sc_vendor, "SiS");
 358                 break;
 359         case PCI_EHCI_VENDORID_NVIDIA:
 360         case PCI_EHCI_VENDORID_NVIDIA2:
 361                 ksprintf(sc->sc_vendor, "nVidia");
 362                 break;
 363         case PCI_EHCI_VENDORID_VIA:
 364                 ksprintf(sc->sc_vendor, "VIA");
 365                 break;
 366         default:
 367                 if (bootverbose)
 368                         device_printf(self, "(New EHCI DeviceId=0x%08x)\n",
 369                             pci_get_devid(self));
 370                 ksprintf(sc->sc_vendor, "(0x%04x)", pci_get_vendor(self));
 371         }
 372
 373         err = bus_setup_intr(self, sc->irq_res, 0,
 374             (driver_intr_t *) ehci_intr, sc, &sc->ih, NULL);
 375         if (err) {
 376                 device_printf(self, "Could not setup irq, %d\n", err);
 377                 sc->ih = NULL;
 378                 ehci_pci_detach(self);
 379                 return ENXIO;
 380         }
 381
 382         /* Enable workaround for dropped interrupts as required */
 383         switch (pci_get_vendor(self)) {
 384         case PCI_EHCI_VENDORID_ATI:
 385         case PCI_EHCI_VENDORID_VIA:
 386                 sc->sc_flags |= EHCI_SCFLG_LOSTINTRBUG;
 387                 if (bootverbose)
 388                         device_printf(self,
 389                             "Dropped interrupts workaround enabled\n");
 390                 break;
 391         default:
 392                 break;
 393         }
 394
 395         /*
 396          * Find companion controllers.  According to the spec they always
 397          * have lower function numbers so they should be enumerated already.
 398          */
 399         parent = device_get_parent(self);
 400         res = device_get_children(parent, &neighbors, &count);
 401         if (res != 0) {
 402                 device_printf(self, "Error finding companion busses\n");
 403                 ehci_pci_detach(self);
 404                 return ENXIO;
 405         }
 406         ncomp = 0;
 407         slot = pci_get_slot(self);
 408         function = pci_get_function(self);
 409         for (i = 0; i < count; i++) {
 410                 if (pci_get_slot(neighbors[i]) == slot && \
 411                         pci_get_function(neighbors[i]) < function) {
 412                         res = device_get_children(neighbors[i],
 413                                 &nbus, &buscount);
 414                         if (res != 0 || buscount != 1)
 415                                 continue;
 416                         usb_sc = device_get_softc(nbus[0]);
 417                         if (usb_sc == NULL)
 418                                 continue;
 419                         bsc = usb_getbushandle(usb_sc);
 420                         if (bsc == NULL)
 421                                 continue;
 422                         DPRINTF(("ehci_pci_attach: companion %s\n",
 423                             device_get_nameunit(bsc->bdev)));
 424                         sc->sc_comps[ncomp++] = bsc;
 425                         if (ncomp >= EHCI_COMPANION_MAX)
 426                                 break;
 427                 }
 428         }
 429         sc->sc_ncomp = ncomp;
 430
 431         ehci_pci_takecontroller(self);
 432         err = ehci_init(sc);
 433         if (err == 0)
 434                 err = device_probe_and_attach(sc->sc_bus.bdev);
 435
 436         if (err) {
 437                 device_printf(self, "USB init failed err=%d\n", err);
 438                 ehci_pci_detach(self);
 439                 return EIO;
 440         }
 441         return 0;
 442 }
 443
 444 static int
 445 ehci_pci_detach(device_t self)
 446 {
 447         ehci_softc_t *sc = device_get_softc(self);
 448
 449         if (sc->sc_flags & EHCI_SCFLG_DONEINIT) {
 450                 ehci_detach(sc, 0);
 451                 sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;
 452         }
 453
 454         /*
 455          * disable interrupts that might have been switched on in ehci_init
 456          */
 457         if (sc->iot && sc->ioh)
 458                 bus_space_write_4(sc->iot, sc->ioh, EHCI_USBINTR, 0);
 459
 460         if (sc->irq_res && sc->ih) {
 461                 int err = bus_teardown_intr(self, sc->irq_res, sc->ih);
 462
 463                 if (err)
 464                         /* XXX or should we panic? */
 465                         device_printf(self, "Could not tear down irq, %d\n",
 466                             err);
 467                 sc->ih = NULL;
 468         }
 469         if (sc->sc_bus.bdev) {
 470                 device_delete_child(self, sc->sc_bus.bdev);
 471                 sc->sc_bus.bdev = NULL;
 472         }
 473         if (sc->irq_res) {
 474                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->irq_res);
 475                 sc->irq_res = NULL;
 476         }
 477         if (sc->io_res) {
 478                 bus_release_resource(self, SYS_RES_MEMORY, PCI_CBMEM, sc->io_res);
 479                 sc->io_res = NULL;
 480                 sc->iot = 0;
 481                 sc->ioh = 0;
 482         }
 483         return 0;
 484 }
 485
 486 static void
 487 ehci_pci_takecontroller(device_t self)
 488 {
 489         ehci_softc_t *sc = device_get_softc(self);
 490         u_int32_t cparams, eec, legsup;
 491         int eecp, i;
 492
 493         cparams = EREAD4(sc, EHCI_HCCPARAMS);
 494
 495         /* Synchronise with the BIOS if it owns the controller. */
 496         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
 497              eecp = EHCI_EECP_NEXT(eec)) {
 498                 eec = pci_read_config(self, eecp, 4);
 499                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP)
 500                         continue;
 501                 legsup = eec;
 502                 pci_write_config(self, eecp, legsup | EHCI_LEGSUP_OSOWNED, 4);
 503                 if (legsup & EHCI_LEGSUP_BIOSOWNED) {
 504                         device_printf(sc->sc_bus.bdev,
 505                             "waiting for BIOS to give up control\n");
 506                         for (i = 0; i < 5000; i++) {
 507                                 legsup = pci_read_config(self, eecp, 4);
 508                                 if ((legsup & EHCI_LEGSUP_BIOSOWNED) == 0)
 509                                         break;
 510                                 DELAY(1000);
 511                         }
 512                         if (legsup & EHCI_LEGSUP_BIOSOWNED)
 513                                 device_printf(sc->sc_bus.bdev,
 514                                     "timed out waiting for BIOS\n");
 515                 }
 516         }
 517 }
 518
 519 /*
 520  * Return the controller to the BIOS.  Do we really need to do this?
 521  *
 522  * One thing we do need to do is give the chip reset (from the shutdown)
 523  * time to finish before handing anything back.  This fixes a machine
 524  * lockup.
 525  */
 526 static void
 527 ehci_pci_givecontroller(device_t self)
 528 {
 529         ehci_softc_t *sc = device_get_softc(self);
 530         u_int32_t cparams, eec, legsup;
 531         int eecp;
 532
 533         DELAY(1000);
 534         cparams = EREAD4(sc, EHCI_HCCPARAMS);
 535         for (eecp = EHCI_HCC_EECP(cparams); eecp != 0;
 536              eecp = EHCI_EECP_NEXT(eec)) {
 537                 eec = pci_read_config(self, eecp, 4);
 538                 if (EHCI_EECP_ID(eec) != EHCI_EC_LEGSUP)
 539                         continue;
 540                 legsup = eec;
 541                 pci_write_config(self, eecp, legsup & ~EHCI_LEGSUP_OSOWNED, 4);
 542         }
 543 }
 544
 545 static device_method_t ehci_methods[] = {
 546         /* Device interface */
 547         DEVMETHOD(device_probe, ehci_pci_probe),
 548         DEVMETHOD(device_attach, ehci_pci_attach),
 549         DEVMETHOD(device_detach, ehci_pci_detach),
 550         DEVMETHOD(device_suspend, ehci_pci_suspend),
 551         DEVMETHOD(device_resume, ehci_pci_resume),
 552         DEVMETHOD(device_shutdown, ehci_pci_shutdown),
 553
 554         /* Bus interface */
 555         DEVMETHOD(bus_print_child, bus_generic_print_child),
 556
 557         {0, 0}
 558 };
 559
 560 static driver_t ehci_driver = {
 561         "ehci",
 562         ehci_methods,
 563         sizeof(ehci_softc_t),
 564 };
 565
 566 static devclass_t ehci_devclass;
 567
 568 DRIVER_MODULE(ehci, pci, ehci_driver, ehci_devclass, NULL, NULL);
 569 DRIVER_MODULE(ehci, cardbus, ehci_driver, ehci_devclass, NULL, NULL);